marinaviolet
  • marinaviolet
  • marinaviolet
  • marinaviolet
  • marinaviolet
  • marinaviolet
  • blackwhite
  • blackwhite
  • blackwhite
  • blackwhite
  • blackwhite

Women's Isaac

$94.00  $145.00

Meet The New Lady Isaac

Introducing our most cushioned model ever, powered by a super stack of ultra plush NRG+ foam and a new generation of ART™ technology to create the perfect balance of cushion and springiness to take your run in entirely new directions

Sustainably Constructed, Certified Vegan


New to Newton? We fit snug for most. Add a 1/2 size for best fit. (US Sizing Displayed)


Women's Isaac Details

Women's Isaac

specifications

  • * Weight: 7.8oz
  • * Drop: 8.0mm
  • * Support: Neutral
  • * Certified Vegan
  • * Sustainably Constructed
Women's Isaac

upper

  • * Anatomically designed air-mesh
  • * Plush, seamless anti-friction linings
  • * Perforated tongue for breathability 
  • * Multi-positional lacing system 
  • * Upper constructed of 100% recycled materials
Women's Isaac

sole technology

  • Energized NRG+™ Foam
  • XPS+ Pebax® plating system
  • * Split-lug Action Reaction Technology™
  • Hytrel® foam footbed

What Makes Newton Unique?


Women's Isaac Side View

More Foam, More Fun

Our first super cushion shoe combines next gen NRG+™ and Hytrel® foams to minimize impact while the sculpted rocker geometry is designed to amplify forward momentum and minimize weight. The result? An amazingly soft but versatile shoe that feels just as great logging long miles as it does wearing around casually.

Women's Isaac Bottom View

Next Level Technology

The new Split-Lug Action Reaction Technology™ is designed to maximize rebound for a smoother, more energetic ride. Equipped with 8 independent flex lugs that compress and spring back like a trampoline, they reduce impact and return energy with each stride and work in harmony with the XPS+ Peebax plate to keep you stable and in total control.

Women's Isaac

Crafted For Comfort

The Adaptive-Fit seamless air mesh molds to the shape of your foot and lets air flow freely; while features like a non-friction lining and multi-positional lacing system provide the security and comfort that makes it feel like it was built just for you.

Women's Isaac
Women's Isaac

What Our Runners Think

Customer Reviews

Based on 45 reviews
93%
(42)
2%
(1)
2%
(1)
0%
(0)
2%
(1)
N
N.M.
Love my shoes; super comfortable, stunning, eco-friendly, and vegan. Can these shoes get any better?

I absolutely adore these shoes. They are incredibly comfortable, stunning, sustainable, and vegan. Thank you for creating such amazing footwear!

j
jody stefanski
Great lady isaacs

Most comfortable shoes
Great on E machine
Quite attractive too

S
Sherri

My new favorite running shoe. It supports my forefoot and is light and flexible.
I ordered 1/2 size larger than usual and it's a good fit but next time I think I'll order 1 whole size bigger.

J
J.M.

Do not like this new style of Women’s Issacs. They are not as sturdy as previous models and are kind of uncomfortable to walk in due to squishy soles.

K
Karen L (Maine)
Super comfortable!

I was hesitant to try this style, but it turns out I love it! It is much more comfortable than the older Lady Isaac style, and I would have been hard pressed to come up with such a review! I've been a loyal Lady Isaac wearer for several years now, and this style is even better than the last!

Customer Reviews

Based on 45 reviews
93%
(42)
2%
(1)
2%
(1)
0%
(0)
2%
(1)
N
N.M.
Love my shoes; super comfortable, stunning, eco-friendly, and vegan. Can these shoes get any better?

I absolutely adore these shoes. They are incredibly comfortable, stunning, sustainable, and vegan. Thank you for creating such amazing footwear!

j
jody stefanski
Great lady isaacs

Most comfortable shoes
Great on E machine
Quite attractive too

S
Sherri

My new favorite running shoe. It supports my forefoot and is light and flexible.
I ordered 1/2 size larger than usual and it's a good fit but next time I think I'll order 1 whole size bigger.

J
J.M.

Do not like this new style of Women’s Issacs. They are not as sturdy as previous models and are kind of uncomfortable to walk in due to squishy soles.

K
Karen L (Maine)
Super comfortable!

I was hesitant to try this style, but it turns out I love it! It is much more comfortable than the older Lady Isaac style, and I would have been hard pressed to come up with such a review! I've been a loyal Lady Isaac wearer for several years now, and this style is even better than the last!